John, Steve from Into3D here. Just want to say that it often amazes me how much I learn from your videos. We just got a Tormach 1100 and have been bumbling along, as none of us are anything close to machinists (we're a bunch of electrical engineering students). I appreciate your humble attitude -- always makes me feel like it's alright to learn as you go! :) Keep up the good work for the community, and I'll be shaking your hand later this month if you are at the 2016 Tormach open house!
I am glad you're teaching on changing one thing and testing. Too many times someone will change more than one variable and then be chasing how to fix the problem regarding machining. I don't know how the tormach lathe does threading but our hurcos alternate per side of the groove as depth increases so finding that sweet spot is fun at times. A lot of times I find myself turning the rpm down and increasing the DOC (this is with a reducing DOC as the threading process occurs.) I'll definitely have to find a time to come out to ohio and hang out with you for a few days so we can bang ideas and knowledge back and forth.
this is great stuff John. I find it weird that this is one of the "less watched" videos. would love to see more of this, with different variables - materials, coolant, ramping, etc. great work!
This is invaluable stuff, man! Thanks so much! It would take me months to figure this stuff out on my own. I'd love to see the same process on Aluminum.
Thank you, John, for all your efforts and the content you create! Your channel is my favorite on learning CNC: I like your style and great quality videos. One thing I wish you'd do is to have some actual graphic illustrations when you explain things as it makes understanding stuff much easier for novices like me. Animated 3D illustrations would be ultimate way to learn, IMO, followed by real life exercises. Thank you again for being there!!! :) Best wishes to you, man!
+NYC CNC - I wish. I know some, but they'd want to be paid, I'm sure. Maybe you can make a shout out to the community and see if someone would be willing to contribute?
I know our most commonly used endmill (3/4 4 flute) gets run at 2500 and 50 inches per minute (500sfm .005 per tooth) with a 30% step over and cutting 1.25 deep. I'm not sure what your tool supplier told you, but we've been told never to run coolant (unless it's stainless steel) and only to run air due to thermal shocking the tool as it enters and exits the cut. as long as the tool isn't sparking you can run the chips as dark as you like. We tend to get ~45min to an hour of cut time as well.
+NYC CNC yes they are, the 3/4 solid carbide endmills we buy are ~$280 (Canadian) we've found that with the solid carbide we have a choice of ether superior tool life, or cranking up our depth of cut and width of cut and matching the per edge life of a insert cutter. the endmill is also a much more versatile tool, allowing us to do many things with a smaller inventory and fewer specialized tools and inserts. also those speeds and feeds I gave you are what we use in 4340, in mild the sfm can be easily bumped up another 25%. Modern carbide is absolutely phenomenal!
Looking good! I'm glad to see you coming out of your shell and start to push the machine/tool. :D In all honesty, I liked the look of the chips at 4000 RPM better, but 3500 was still quite good.
Love the video, trying to self-teach but having some problems. We cut flat sheet steel 1.5-2mm thick. The bit we use is a 4-flute tialn coated endmill 1.5mm wide. We are cutting out 2d contours. Would we be better plunging through and cutting in one pass or slowly ramping down ( but this then is cutting using just the bottom of the bit)? In your video your cutting from the outside of the stock but we are going to be inside so effectively cutting on 3 sides of the router bit.
Do you think you could have nudged the RPM's again with the thicker chips? The last chips looked a little cooler than the 3500 RPM chips at lower chipload didn't they?
if im using a 1/2" 4 flute carbide endmill, i try to reach 0.006" per tooth and ~320 SFM. They are well blue, but it works wery well (conversional milling, don't have a cnc in work...)
John,
Steve from Into3D here. Just want to say that it often amazes me how much I learn from your videos. We just got a Tormach 1100 and have been bumbling along, as none of us are anything close to machinists (we're a bunch of electrical engineering students). I appreciate your humble attitude -- always makes me feel like it's alright to learn as you go! :) Keep up the good work for the community, and I'll be shaking your hand later this month if you are at the 2016 Tormach open house!
I am glad you're teaching on changing one thing and testing. Too many times someone will change more than one variable and then be chasing how to fix the problem regarding machining. I don't know how the tormach lathe does threading but our hurcos alternate per side of the groove as depth increases so finding that sweet spot is fun at times. A lot of times I find myself turning the rpm down and increasing the DOC (this is with a reducing DOC as the threading process occurs.) I'll definitely have to find a time to come out to ohio and hang out with you for a few days so we can bang ideas and knowledge back and forth.
this is great stuff John. I find it weird that this is one of the "less watched" videos. would love to see more of this, with different variables - materials, coolant, ramping, etc. great work!
Hey John thanks for this! Every machinist should see this.
Ok, this is an absolutely fantastic video series. Well presented material and great demos. Thanks for making this!
This is invaluable stuff, man! Thanks so much! It would take me months to figure this stuff out on my own.
I'd love to see the same process on Aluminum.
yes me too. im working on aluminum right now and i just cant get the right speeds and feeds. im using a .6254x4 high speed end mill
You are the best. What a great way to illustrate this concept. i finally understand. Thank you so much!
wonderful video! loved the results and the scientific approach
Thank you, John, for all your efforts and the content you create! Your channel is my favorite on learning CNC: I like your style and great quality videos. One thing I wish you'd do is to have some actual graphic illustrations when you explain things as it makes understanding stuff much easier for novices like me. Animated 3D illustrations would be ultimate way to learn, IMO, followed by real life exercises. Thank you again for being there!!! :) Best wishes to you, man!
+NYC CNC - I wish. I know some, but they'd want to be paid, I'm sure. Maybe you can make a shout out to the community and see if someone would be willing to contribute?
Thanks for sharing. I like you're style of teaching.
Great info. Immediately useful process. Thanks.
thanks for all the knowledge you share. much appreciated
I know our most commonly used endmill (3/4 4 flute) gets run at 2500 and 50 inches per minute (500sfm .005 per tooth) with a 30% step over and cutting 1.25 deep. I'm not sure what your tool supplier told you, but we've been told never to run coolant (unless it's stainless steel) and only to run air due to thermal shocking the tool as it enters and exits the cut. as long as the tool isn't sparking you can run the chips as dark as you like. We tend to get ~45min to an hour of cut time as well.
+NYC CNC yes they are, the 3/4 solid carbide endmills we buy are ~$280 (Canadian) we've found that with the solid carbide we have a choice of ether superior tool life, or cranking up our depth of cut and width of cut and matching the per edge life of a insert cutter. the endmill is also a much more versatile tool, allowing us to do many things with a smaller inventory and fewer specialized tools and inserts. also those speeds and feeds I gave you are what we use in 4340, in mild the sfm can be easily bumped up another 25%. Modern carbide is absolutely phenomenal!
I'm looking Foward to this series. I use HSS on my lathe and mill, and want to learn to use carbide. Thanks, Chris
Looking good! I'm glad to see you coming out of your shell and start to push the machine/tool. :D
In all honesty, I liked the look of the chips at 4000 RPM better, but 3500 was still quite good.
Love the video, trying to self-teach but having some problems. We cut flat sheet steel 1.5-2mm thick. The bit we use is a 4-flute tialn coated endmill 1.5mm wide. We are cutting out 2d contours. Would we be better plunging through and cutting in one pass or slowly ramping down ( but this then is cutting using just the bottom of the bit)? In your video your cutting from the outside of the stock but we are going to be inside so effectively cutting on 3 sides of the router bit.
Do you think you could have nudged the RPM's again with the thicker chips? The last chips looked a little cooler than the 3500 RPM chips at lower chipload didn't they?
question, how different are the speeds and feeds from a carbide to a high speed steel end mill?
I wish you are woodworker. :)
Exellent videos.
if im using a 1/2" 4 flute carbide endmill, i try to reach 0.006" per tooth and ~320 SFM. They are well blue, but it works wery well (conversional milling, don't have a cnc in work...)
I wish I could give you 2 thumbs up!
should account for chip thinning.
Whats the doc? 100% of dia?
wonderful video! loved the results and the scientific approach